f785676f2a
all of the features in the current working draft of the upcoming C++ standard, provisionally named C++1y. The code generator's performance is greatly increased, and the loop auto-vectorizer is now enabled at -Os and -O2 in addition to -O3. The PowerPC backend has made several major improvements to code generation quality and compile time, and the X86, SPARC, ARM32, Aarch64 and SystemZ backends have all seen major feature work. Release notes for llvm and clang can be found here: <http://llvm.org/releases/3.4/docs/ReleaseNotes.html> <http://llvm.org/releases/3.4/tools/clang/docs/ReleaseNotes.html> MFC after: 1 month
75 lines
1.7 KiB
C++
75 lines
1.7 KiB
C++
//===- lib/Support/Disassembler.cpp -----------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the necessary glue to call external disassembler
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// libraries.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Support/Disassembler.h"
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#include "llvm/Config/config.h"
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#include <cassert>
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#include <iomanip>
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#include <sstream>
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#include <string>
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#if USE_UDIS86
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#include <udis86.h>
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#endif
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using namespace llvm;
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bool llvm::sys::hasDisassembler()
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{
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#if defined (__i386__) || defined (__amd64__) || defined (__x86_64__)
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// We have option to enable udis86 library.
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# if USE_UDIS86
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return true;
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#else
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return false;
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#endif
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#else
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return false;
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#endif
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}
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std::string llvm::sys::disassembleBuffer(uint8_t* start, size_t length,
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uint64_t pc) {
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#if (defined (__i386__) || defined (__amd64__) || defined (__x86_64__)) \
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&& USE_UDIS86
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std::stringstream res;
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unsigned bits;
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# if defined(__i386__)
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bits = 32;
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# else
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bits = 64;
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# endif
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ud_t ud_obj;
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ud_init(&ud_obj);
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ud_set_input_buffer(&ud_obj, start, length);
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ud_set_mode(&ud_obj, bits);
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ud_set_pc(&ud_obj, pc);
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ud_set_syntax(&ud_obj, UD_SYN_ATT);
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res << std::setbase(16)
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<< std::setw(bits/4);
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while (ud_disassemble(&ud_obj)) {
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res << ud_insn_off(&ud_obj) << ":\t" << ud_insn_asm(&ud_obj) << "\n";
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}
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return res.str();
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#else
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return "No disassembler available. See configure help for options.\n";
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#endif
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}
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